Tubular Crossfire 2 quadcopter

This is a mashup of MikeyB's very popular Crossfire 2 and my own T4 Quadcopter's tubular arms which are a bit more rigid than the originals (see video here).
Please refer to MikeyB's quadcopter for excellent instructions and the other parts required.
Note: I'd recommend using a 4-in-1 ESC if you want to build this quadcopter. MikeyB's design uses separate ESCs strapped to each arm which is not possible with the tubular arms. A 4-in-1 ESC combines the ESCs with the power distribution board and can be mounted in the center of the frame - very tidy!
Oh, and the Sketchup file is included so you can make changes to suit yourself.

Check out the whole "T" copter family:

• TX8 Octocopter
• T6 Hexacopter
• T4 Quadcopter (10" props)
• T4 Quadcopter Mini 315 (7-8" props)
• T4 Quadcopter Mini 250 (5" props)
• Tubular Crossfire 2 quadcopter

I've added a post on the forums over at DIY Drones for discussing and improving these designs.

Revision History

28 March 2014

• added the short "springy" leg STL from my T6 design. Here's a quick video that shows a longer version of the springy leg design (2nd half).